If a cold or cough is accompanied by purulent sputum, it is generally considered that there may be secondary bacterial infection or lower respiratory tract infection. Cold is an acute upper respiratory tract infection. Its typical symptoms are stuffy nose, runny nose, sore throat, and of course, cough, mostly dry cough or white mucus sputum. If the cough lasts for a long time, it is easy to be complicated with bacterial infection, so you can cough up pus and sputum, or even yellow sputum. If lower respiratory tract infection is complicated, such as bronchitis or pneumonia, expectoration may also occur. Therefore, when a cold or cough is accompanied by purulent sputum, blood analysis, chest X-ray or lung CT examination should be improved. If there is bacterial infection, antibiotics should be added for treatment, such as cefuroxime, cefaclor, etc.
